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G. D.. JONES.A

Quartz MH.

Patented .lany l, 1867.

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GILBERT D. JONES, .0F NEW YORK, N. Y.l Letters .Patent No; 60,789, datedJanuary 1, 1867.

IMPROVEMENT IN QUARTZ-MILLS.

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vvro-ALL wHoM rr MAY coNcERN: i Be it known that I, GILBERT D. JONES, ofthe city, county, and State of New York, have ipvcntcd a new andimproved Grinding-Mill; .and I dop'hereby declare that the rollowing isa full, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming a part oii this specification, in which-Figure 1 is a vertical section of my invention, taken in the line a: x,iig. 2.

Figure 2 is a vertical section of the same, taken inthe line yy, ig.,1.

Figure 3 is aplan or top view of the bed and Scrapers pertainingto thesame.

Similar letters ofr reference indicatelike parts.

This invention relates to a new and improved 'grinding-mill, of the kindcommonly termed the Chilian.

mill," and it consists in having .the peripheries of the wheels orrollers of V form, and the bed on which the wheelsor rollers workprovided with an annular V groove, for the peripheries of' the wheels orrollers to work or run in.

The invention also. consists in the employment or use of Scrapers,applied to the machine in such a manner that, by a very simpleadjustment,'the material to` be ground may be kept within thev path ofthe wheels or rollers, and when sufficiently ground, discharged from thebed-plate. l

By having the peripheries of the wheels or rollers of V form, andworking in a corresponding shaped groove in the bed-piece, a cutting orgrinding action is obtained, which renders the mill far more eiiicientin its operation than the original mill of the class specified; and thesubstance, while being ground, is also kept more within thc path of thewheels or rollers.

A. represents the bed of the mill, constructed of stone or metal, andhaving an annular groove, a,-'made in its upper surface, of V form inits transverse section, as shown clearly in figs. 1 and 2. B is arectangular framing, which rests on the bed, A, and C is averticalshaft, fitted centrally therein, the lower end of saidv shaft beingstepped centrally in the bed, A, as shown at b in iig. 1. This shaft, C,is formed or provided with a vertical oblong loop or opening, c,-throughwhich a horizontal shaft, D, passes,`and E Erare .two wheels or rollers,placed loosely on said shaft, and retained thereon by hubs, d, on theends of the same. The wheels or rollers,E E, may beconstructed of stoneor iron, and 'their peripheries are of V form, corrcspondingto the shapeof the annular groove, a, in the bed, A, in which groove the wheels orrollers lrotate or work, as will bc understood by referring to iig. 1.On the shaft, C, below the loop or opening, c, there is keyed ahorizontal bar, F, the ends of which are'composed of two prongs orparms,d d', as shown clearly in fig. 3. In one of these prongs or arms, d, ateach end of said bar, there is inserted a vertical arbor, e, and to thelower ends of these arbors curved scrapers, G, are attached, which, asAthe wheels or rollers, E E, travel around in the groove,a,

scrape or throw the substance being ground into the groove a. The otherprongs or, arms have vertical arbors,

H, passing through them, which arbors, H, extend up through arms, I, onthe shaft, 0,'and are connected to th'e out'er ends of levers, J, on thearms I, the inner ends oi' said levers being connected by pivots to`a-sliding sleeve, K, on the shaft C, which sleeve is raised and loweredby a lever, L. Only one arbor, H, is shown in' the drawings; but as bothare alike, and arranged und operated in precisely vthe same manner, therepresentation of one only is deemed suihcient. To the lower ends of thearbors, H curved Scrapers, M, are attached, which, when lowered orbrought down in contact with the bed, A, have a tendency to scrape orthrow o'il` the ground substance from the bed, A.. l When saidscrapcrsare raised, they are designed to be above the substance beingground, so that they cannot act upon it.' These Scrapers, M, it will beunderstood, arc raised and lowered by actuating the lever, L. y

The operation is as vfollows: The shaft, C, is rotated,'by theapplication of power to its upper end, and the Scrapers, M, areelevated, and the substance to be ground placed in the annillar groove,a, in the bed, A. The

wheels or rollers, E E, operate with a cutting and crushing action, thecrushing action being due to the weight' or gravity of the wheelslorrollers, and the cutting action due to the sharp edge or angle, a*,formed by the two inclined surfaces of theperipheries of the Wheels orrollersworking in the V-shaped annular groove, a, the edge or an le, a*,as the wheels or rollers, E, pass' around in the groove, a, yin the pathof aI circle, working laterally over the corresponding angle, 6*, formedby the two inclined surfaces of the groove, a. The/Scrapers,

2 eojaa G, throw the substance being ground into the groove, a,preventing it from escaping from the bed, A, and when the substance issufciently ground, the Scrapers, M, are lowered, and said kSemper-sthrow the ground Substance from thebed, the Scrapers, M, when down,Working in the groove, a, and extending out to the odge of the bed, A,as Shown clearly in iig. 2. I y l Having v'thus described my invention,I claim as new, and desire to secure by Letters Patent-h The adjustableor rising and fgnilng scrpers, M, and the' fixed Scrapers, Gr, arrangedand applied to operate substantially in the manner as and for the prposeSct forth.

G. D. JONES.

Witnesses WM. F. MCNAMARA, ALEX. F. ROBERTS.

